1997 Buick Regal Owner's Manual - Page 60

9. On both sides of the harness, pull up on the lap part a little to be sure locked. it's If the harness isn't locked,or if it becomes too tight, unfasten the harness clip. Then unlatch the harness by pushing the button on the buckle, and let both sides of the harness go all the way back so they will move freely again. Then, repeat Steps 4 through 8. 10. Adjust the position of the harness on the child's shoulders by moving the clip up or down along the harness. On each side of the harness, the shoulder part should be centered on the child's shoulder. The harness should be away from the child's face and neck, but not falling off the child's shoulders.